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公开(公告)号：EP3021561B1
公开(公告)日：2019-08-21
申请号：EP14822158.3
申请日：2014-05-07
发明人： ZHANG, Qiang , WANG, Lizhong
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103.发明公开
公开(公告)号：EP3497470A1
公开(公告)日：2019-06-19
申请号：EP17757492.8
申请日：2017-08-11
发明人： VAN DER TEMPEL, Ward
IPC分类号： G01S7/491 , H01L27/146
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公开(公告)号：EP3467542A1
公开(公告)日：2019-04-10
申请号：EP17826118.6
申请日：2017-08-25
摘要： The present application provides a power control method, applied in a distance measuring module comprising a light emitting unit. The power control method comprises steps of the light emitting unit emitting an incident light by a first emitting power in a first time; receiving a reflected light corresponding to the incident light; determining a distance between the distance measuring module and a target according to the reflected light; and adjusting an emitting power of the light emitting unit according to the distance.
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公开(公告)号：EP3458874A1
公开(公告)日：2019-03-27
申请号：EP17722475.5
申请日：2017-05-12
发明人： SPRUIT, Johannes, Hendrikus, Maria , VAN DER LEE, Alexander, Marc , KOOIJMAN, Gerben , OUWELTJES, Okke , HELLMIG, Joachim, Wilhelm , RAS, Arnoldus, Johannes, Martinus, Jozeph , JUTTE, Petrus, Theodorus
摘要： The invention describes a laser sensor or laser sensor module (100) using self-mixing interference for particle density detection, a related method of particle density detection and a corresponding computer program product. The invention further relates to devices comprising such a laser sensor or laser sensor module. It is a basic idea of the present invention to detect particles by means of self-mixing interference signals and determine a corresponding particle density. In addition at least a first parameter related to at least one velocity component of a velocity vector of the particles is determined in order to correct the particle density if there is the relative movement between a detection volume and the particles. Such a relative movement may for example be related to a velocity of a fluid transporting the particles (e.g. wind speed). Furthermore, it is possible to determine at least one velocity component of the velocity of the particles based on the self-mixing interference signals.
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公开(公告)号：EP3458873A1
公开(公告)日：2019-03-27
申请号：EP17721730.4
申请日：2017-05-09
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公开(公告)号：EP3370311A1
公开(公告)日：2018-09-05
申请号：EP17158808.0
申请日：2017-03-02
IPC分类号： H01S5/183 , H01S5/00 , H01S5/062 , G01N15/02 , G01S7/491 , G01N15/14 , H01S5/026 , H01S5/065 , G01N15/00 , G01N15/10
CPC分类号： H01S5/0028 , G01N15/0205 , G01N15/1434 , G01N2015/0003 , G01N2015/1075 , G01N2015/1454 , G01N2015/1486 , G01N2015/1493 , H01S5/0264 , H01S5/0622 , H01S5/0653 , H01S5/183 , H01S2301/02
摘要： The invention describes a method of determining operation conditions of a particle detector (200) for detecting a particle density of particles with a size of less than 20 µm, preferably less than 10 µm in a fluid, wherein the particle detector (200) comprises a laser (111), wherein the laser is a multimode Vertical Cavity Surface Emitting Laser, the method comprising the steps of:
providing an electrical drive current to the laser (111) such that a laser beam (112) is emitted by the laser,
varying the drive current within a predefined range of drive currents,
determining an intensity signal of an optical wave within a laser cavity of the laser (111) as a function of the drive current,
determining a noise measure of the intensity signal as a function of the drive current,
determining a range of drive currents in which the noise measure is below a predefined threshold value,
determining at least a part of the operation conditions of the particle detector (200) by choosing a drive current for particle detection out of the determined range of drive currents.
The invention further relates to a particle detector (200) and a mobile device (190) comprising such a particle detector (200). The invention finally relates to a related computer program product.-
公开(公告)号：EP3365696A1
公开(公告)日：2018-08-29
申请号：EP16858242.7
申请日：2016-10-20
IPC分类号： G01S7/491
CPC分类号： G01S7/524 , B06B1/0215 , G01S7/521 , G01S7/526 , G01S15/102 , G01S15/325
摘要： An ultrasonic transmitter system includes a digital controller, bandpass pulse-width modulator (BP-PWM) unit, a digital to analog converter (DAC), and an ultrasound transducer. The controller generates pulse width and phase reference signals. The BP-PWM configured receives these signals generates a pulse width modulation (PWM) output characterized by a pulse width and a phase based on the pulse width and phase reference signals. The DAC) receives the PWM output from the BP-PWM unit and generates an output characterized by the pulse width and phase. The ultrasonic transducer receives the output from the DAC and generates an output sound pressure in response to the output from the DAC. An amplitude of the RMS sound pressure depends on the pulse width of the output from the DAC.
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公开(公告)号：EP2558883B1
公开(公告)日：2018-07-25
申请号：EP11703883.6
申请日：2011-02-16
申请人： Robert Bosch GmbH
CPC分类号： G01C3/02 , G01S7/4913 , G01S7/4915 , G01S17/36
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公开(公告)号：EP3238206A4
公开(公告)日：2018-07-18
申请号：EP15873982
申请日：2015-11-23
申请人： GOOGLE LLC
发明人： WAN CHUNG CHUN , FOWLER BOYD
IPC分类号： H04N5/355 , G01S7/481 , G01S7/491 , G01S17/89 , H01L27/146 , H04N5/3745 , H04N9/04 , H04N13/271
CPC分类号： H01L27/1465 , G01S7/4816 , G01S7/4914 , G01S17/89 , H01L27/14609 , H01L27/14612 , H01L27/14621 , H01L27/1463 , H01L27/14641 , H04N5/33 , H04N5/332 , H04N5/35572 , H04N5/3742 , H04N5/37457 , H04N5/378 , H04N9/045 , H04N13/271
摘要： An image sensor is described. The image sensor includes a pixel array having a unit cell that includes visible light photodiodes and an infra-red photodiode. The visible light photodiodes and the infra-red photodiode are coupled to a particular column of the pixel array. The unit cell has a first capacitor coupled to the visible light photodiodes to store charge from each of the visible light photodiodes. The unit cell having a readout circuit to provide the first capacitor's voltage on the particular column. The unit cell having a second capacitor that is coupled to the infra-red photodiode through a transfer gate transistor to receive charge from the infra-red photodiode during a time-of-flight exposure. The unit cell has a back-drain transistor coupled to the infra-red photodiode.
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